| 摘要 |
<p>A block of data, e.g. multisensory data 2, comprises at least one frame of a plurality of different types of data, e.g. relating to sight, sound, smell, taste and feel. Stored quality settings 7 for each type of data include parameters determining the level of compression for that type of data in the block 2. Each type of data in the block 2 is subjected to compression in accordance with the quality settings 7 to produce a compressed block of data 11. A package of data 10 is created that includes the compressed block 11 and a header 12, which identifies the compression technique and includes the respective parameters used for compressing each type of data. A number of packages 10 are then subjected to inter-package compression to create a final package 14 that combines the individual packages 10, but replaces the headers by mini headers 15 that now contain only the parameters for the individual compression of the data types. The final package 14 has a main header 16 that contains temporal compression parameters as well as data identifying the types of compression applied to the different types of data of the individual packages 10 in the final package 14.</p> |
